Thread: Taking the plunge
-
Milling a round pocket with no islands in it. I think it's a special case, on account of it being a common requirement and easy to spot and cater for. Need to choose a method.
There's the centre, plunge, expand, centre, plunge, expand, over and over again method.
Not bad, but there is also the spiral straight down to the bottom method which gives a deliciously constant cut, and, often as not can work with a non-centre cutting end mill.
Plunging without zero backlash is not friendly, the faintest slop on the table can make for ghastly vibration as it tries to cut a slighthly out of round geometry. Plus the cutting force gives a powerful downward component on the screw least well positioned to take it.
Tempting to slow the feed rate near the bottom, but then I run the risk of getting in to cut/no cut territory, a rub/snatch cycle due to flex in the system.
Is a roughing out plunge with a horizontal component a bad idea? I've never tried it.
Anyone seen a super smooth round pocket cutting algorythm in action that I can stea... er, 'borrow' from?
Robin
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Will this end-mill plunge?
By Tenson in forum Tool & Tooling TechnologyReplies: 10Last Post: 26-02-2013, 04:40 PM -
BUILD LOG: taking the back off a stepper
By blackburn mark in forum DIY Router Build LogsReplies: 10Last Post: 06-10-2012, 08:12 PM -
this site is taking a long time load or refresh pages
By deannos in forum General DiscussionReplies: 6Last Post: 15-12-2011, 10:00 PM -
WANTED: Taking the plunge again!!!
By Ricardoco in forum Items WantedReplies: 33Last Post: 26-08-2011, 10:50 AM -
Taking this route for spindle
By GeorgeD in forum Gantry/Router Machines & BuildingReplies: 9Last Post: 25-08-2010, 09:23 AM
Bookmarks